# Llama 3-8B vs Phi 3 Mini 128k Instruct

> Phi 3 Mini 128k Instruct is the stronger model overall, scoring 29.7 to 25.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/llama-3-8b-vs-phi-3-mini-128k-instruct
- Last updated: 2026-10-11
- Shared benchmarks: 19

## Summary

- They share 19 benchmarks with published results for both. Llama 3-8B scores higher in 5 categories and Phi 3 Mini 128k Instruct in 3 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where Phi 3 Mini 128k Instruct leads 31.6 to 8.8.

## Snapshot

| | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| Provider | Meta | Microsoft |
| Noometry Index | 25.5 | 29.7 |
| Rank | 344 | 305 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- Llama 3-8B: 31.0 (#289)
- Phi 3 Mini 128k Instruct: 28.8 (#312)

| Benchmark | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| BigCodeBench Instruct | 31.9% | 29.6% |
| LMArena Coding | 1152 | 1039 |
| BigCodeBench Complete | 36.9% | 40.6% |
| HumanEval+ | 56.7% | — |
| MBPP+ | 54.8% | — |

## Reasoning

- Llama 3-8B: 14.3 (#326)
- Phi 3 Mini 128k Instruct: 19.6 (#256)

| Benchmark | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Hard Prompts | 1133 | 1028 |
| Chess Puzzles | 0% | — |
| DTBench | 43.9% | — |
| Adversarial NLI | 57.3% | — |
| Epoch Capabilities Index | 116.45 | — |
| ForecastBench | 58.6 | — |
| WinoGrande | 75.7% | — |

## Math

- Llama 3-8B: 8.8 (#323)
- Phi 3 Mini 128k Instruct: 31.6 (#222)

| Benchmark | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Math | 1151 | 1089 |
| OTIS Mock AIME 2024-2025 | 1.9% | — |
| MATH Level 5 | 6.1% | — |

## Knowledge

- Llama 3-8B: 7.8 (#308)
- Phi 3 Mini 128k Instruct: 26.8 (#254)

| Benchmark | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Expert | 1113 | 984 |
| GPQA Diamond | 26.1% | — |
| ARC (AI2) Challenge | 82.8% | — |
| MMLU | 68.8% | — |
| OpenBookQA | 82.6% | — |
| TriviaQA | 67.7% | — |

## Multilingual

- Llama 3-8B: 30.8 (#261)
- Phi 3 Mini 128k Instruct: 25.2 (#285)

| Benchmark | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Non-English | 1098 | 1000 |
| LMArena Chinese | 1076 | 1016 |
| LMArena French | 1159 | 1039 |
| LMArena German | 1104 | 1006 |
| LMArena Japanese | 967 | 899 |
| LMArena Korean | 1004 | 856 |
| LMArena Russian | 1109 | 1004 |
| LMArena Spanish | 1173 | 1059 |

## Instruction Following

- Llama 3-8B: 58.4 (#260)
- Phi 3 Mini 128k Instruct: 51.8 (#294)

| Benchmark | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Instruction Following | 1127 | 1023 |

## Long Context

- Llama 3-8B: 34.2 (#251)
- Phi 3 Mini 128k Instruct: 30.4 (#289)

| Benchmark | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Longer Query | 1128 | 996 |

## Writing & Preference

- Llama 3-8B: 37.5 (#256)
- Phi 3 Mini 128k Instruct: 27.1 (#301)

| Benchmark | Llama 3-8B | Phi 3 Mini 128k Instruct |
|---|---|---|
| LMArena Text | 1166 | 1050 |
| LMArena Creative Writing | 1150 | 1024 |
| LMArena Multi-Turn | 1152 | 989 |

## FAQ

### Is Llama 3-8B better than Phi 3 Mini 128k Instruct?

Phi 3 Mini 128k Instruct is the stronger model overall, scoring 29.7 to 25.5 on the Noometry Index.

### Is Llama 3-8B or Phi 3 Mini 128k Instruct better for coding?

Llama 3-8B scores higher on coding benchmarks: 31.0 versus 28.8 in the Noometry coding category.

### How many benchmarks do Llama 3-8B and Phi 3 Mini 128k Instruct share?

19 benchmarks have published results for both models. Llama 3-8B has 34 scored results on Noometry and Phi 3 Mini 128k Instruct has 19.